Enhancement of platinum mass activity on the surface of polymer-wrapped carbon nanotube-based fuel cell electrocatalysts

Inas H. Hafez; Mohamed R. Berber; Tsuyohiko Fujigaya; Naotoshi Nakashima

doi:10.1038/srep06295

Enhancement of platinum mass activity on the surface of polymer-wrapped carbon nanotube-based fuel cell electrocatalysts

Inas H. Hafez, Mohamed R. Berber, Tsuyohiko Fujigaya, Naotoshi Nakashima

Research output: Contribution to journal › Article › peer-review

49 Citations (Scopus)

Abstract

Cost reduction and improved durability are the two major targets for accelerating the commercialization of polymer electrolyte membrane fuel cells (PEFCs). To achieve these goals, the development of a novel method to fabricate platinum (Pt)-based electrocatalysts with a high mass activity, deposited on durable conductive support materials, is necessary. In this study, we describe a facile approach to grow homogeneously dispersed Pt nanoparticles (Pt) with a narrow diameter distribution in a highly controllable fashion on polymer-wrapped carbon nanotubes (CNTs). A PEFC cell employing a composite with the smallest Pt nanoparticle size (2.3 €...nm diameter) exhibited a ∼8 times higher mass activity compared to a cell containing Pt with a 3.7 €...nm diameter. This is the first example of the diamter control of Pt on polymer-wrapped carbon supporting materials, and the study opens the door for the development of a future-generation of PEFCs using a minimal amount of Pt.

Original language	English
Article number	6295
Journal	Scientific reports
Volume	4
DOIs	https://doi.org/10.1038/srep06295
Publication status	Published - 2014

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title = "Enhancement of platinum mass activity on the surface of polymer-wrapped carbon nanotube-based fuel cell electrocatalysts",

abstract = "Cost reduction and improved durability are the two major targets for accelerating the commercialization of polymer electrolyte membrane fuel cells (PEFCs). To achieve these goals, the development of a novel method to fabricate platinum (Pt)-based electrocatalysts with a high mass activity, deposited on durable conductive support materials, is necessary. In this study, we describe a facile approach to grow homogeneously dispersed Pt nanoparticles (Pt) with a narrow diameter distribution in a highly controllable fashion on polymer-wrapped carbon nanotubes (CNTs). A PEFC cell employing a composite with the smallest Pt nanoparticle size (2.3 €...nm diameter) exhibited a ∼8 times higher mass activity compared to a cell containing Pt with a 3.7 €...nm diameter. This is the first example of the diamter control of Pt on polymer-wrapped carbon supporting materials, and the study opens the door for the development of a future-generation of PEFCs using a minimal amount of Pt.",

author = "Hafez, {Inas H.} and Berber, {Mohamed R.} and Tsuyohiko Fujigaya and Naotoshi Nakashima",

note = "Funding Information: The authors gratefully acknowledge Prof. A. Robertson of Kyushu University for helpful discussion and H. Matsumoto and T. Sato of Hitachi High-Technologies Corporation for the measurements of SEM/STEM dual monitoring. This work was supported in part by the Low-Carbon Research Network (LCnet) and the Nanotechnology Platform Project of the Ministry of Education, Japan. Part of this research was supported by the Adaptable and Seamless Technology Transfer Program through Target-driven R&D, JST (AS242Z00200L) and the Advanced Low Carbon Technology Research and Development Program (ALCA).",

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doi = "10.1038/srep06295",

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AU - Hafez, Inas H.

AU - Berber, Mohamed R.

AU - Fujigaya, Tsuyohiko

AU - Nakashima, Naotoshi

N1 - Funding Information: The authors gratefully acknowledge Prof. A. Robertson of Kyushu University for helpful discussion and H. Matsumoto and T. Sato of Hitachi High-Technologies Corporation for the measurements of SEM/STEM dual monitoring. This work was supported in part by the Low-Carbon Research Network (LCnet) and the Nanotechnology Platform Project of the Ministry of Education, Japan. Part of this research was supported by the Adaptable and Seamless Technology Transfer Program through Target-driven R&D, JST (AS242Z00200L) and the Advanced Low Carbon Technology Research and Development Program (ALCA).

PY - 2014

Y1 - 2014

N2 - Cost reduction and improved durability are the two major targets for accelerating the commercialization of polymer electrolyte membrane fuel cells (PEFCs). To achieve these goals, the development of a novel method to fabricate platinum (Pt)-based electrocatalysts with a high mass activity, deposited on durable conductive support materials, is necessary. In this study, we describe a facile approach to grow homogeneously dispersed Pt nanoparticles (Pt) with a narrow diameter distribution in a highly controllable fashion on polymer-wrapped carbon nanotubes (CNTs). A PEFC cell employing a composite with the smallest Pt nanoparticle size (2.3 €...nm diameter) exhibited a ∼8 times higher mass activity compared to a cell containing Pt with a 3.7 €...nm diameter. This is the first example of the diamter control of Pt on polymer-wrapped carbon supporting materials, and the study opens the door for the development of a future-generation of PEFCs using a minimal amount of Pt.

AB - Cost reduction and improved durability are the two major targets for accelerating the commercialization of polymer electrolyte membrane fuel cells (PEFCs). To achieve these goals, the development of a novel method to fabricate platinum (Pt)-based electrocatalysts with a high mass activity, deposited on durable conductive support materials, is necessary. In this study, we describe a facile approach to grow homogeneously dispersed Pt nanoparticles (Pt) with a narrow diameter distribution in a highly controllable fashion on polymer-wrapped carbon nanotubes (CNTs). A PEFC cell employing a composite with the smallest Pt nanoparticle size (2.3 €...nm diameter) exhibited a ∼8 times higher mass activity compared to a cell containing Pt with a 3.7 €...nm diameter. This is the first example of the diamter control of Pt on polymer-wrapped carbon supporting materials, and the study opens the door for the development of a future-generation of PEFCs using a minimal amount of Pt.

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Enhancement of platinum mass activity on the surface of polymer-wrapped carbon nanotube-based fuel cell electrocatalysts

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